add some notes
modified:   codes/10/10-1unievent.cpp
modified:   codes/11/11-1connect_timeout.cpp
modified:   codes/11/11-6time_heap.h
modified:   codes/14/14-5sigmask.c
modified:   codes/16/16-4stress_client.cpp
modified:   codes/9/9-4oneshot.cpp
modified:   codes/9/9-5unblockconnect.cpp
modified:   codes/springsnail/config.xml
modified:   codes/springsnail/fdwrapper.h
modified:   codes/springsnail/log.cpp
modified:   codes/springsnail/mgr.cpp
modified:   codes/springsnail/processpool.h